Cass’s Revenge
All she talks about is Emily. Her muscles. What she did at the party. At first, I thought it was awe—maybe even attraction—but no. It's hate. Pure, blinding hate.
She just couldn't stand that somebody, anybody, beat her. She'd gotten so used to being the center of attention back at the university. All the boys wanted to fuck her. All the girls wanted to be her. Cass loved the attention. The power.
And then... Emily! She didn't just beat Cass at arm wrestling—she crushed her. In front of everyone. With a slow, smirking cruelty, like she was savoring the humiliation.
But the thing no one talks about—the thing Cass won’t talk about—is what happened when Emily pinned her. The way Emily… came. Visibly. Violently. As if the domination itself pushed her over the edge.
Everyone saw it. Everyone felt it. And I think that moment is what broke Cass.
I stopped by her place this morning. Her apartment was a mess, and I found her in the bathroom, standing in front of the mirror, gribbing a tube of lipstick like a weapon.
I'm sending you a picture I took before she saw me.
She looked bigger, harder than I'd ever seen her. The way her forearms were swelling as she gripped the countertop. But it was her face that stopped me cold.
She was staring into the mirror, lips curled into a snarl, muttering something under her breath. She'd written all over the mirror with her lipstick—"Never again!", "Get. Fucking. BIGGER!", "Break her bones!"
Jesus.
And taped right next to it was a Polaroid of Emily from that night. Leaning back on the couch, letting some dude feel up her abs. With that same bitch ass smirk she always has on her lips! Only, Cass had crossed out her face, like she was a hitman on a mission.
Then, I heard Cass let out a deep growl as she squeezed the countertop harder, glaring more intensely at Emily's photo, until.... *CRUNCH!*... She crushed the edge of the counter in her fucking hands!
Honestly, I don't know if I'm more worried for Cass... or Emily.
I'll keep you posted.
As I was leaving, I had to walk past her kitchen counter. What a fucking mess. It's like her only existence is to lift and grow.
There were unmarked pill bottles everywhere, some of them knocked over. Some spilled whey powder.
I dipped my finger in it out of curiosity, thinking it was either vanilla or birthday cake flavor. But the tastes—sharp, bitter, kind of chemical. Not whey!
Then it hit me.
Coke. Cass is using fucking cocaine. To work out!
While I was standing there, trying to wrap my head around that, I noticed this notepad next to her sink. He workout notes.
You're not going to believe it. She went from 20-pound dumbbell curls to 50 pounds in just over two weeks! But really made my stomach drop was reading how she wrote "Fucking EASY!" at the bottom.
I'm going back tomorrow night. I have to try and talk to her. She's spiraling. Going way too far! I'll keep you posted.
Danny didn’t even flinch when I came in. He barely looked up. Just kept steadying her arm, the needle already buried deep in her shoulder. His other hand braced her bicep, fingers spread across the granite slab of muscle, like he needed both hands to handle it.
And Cass—Jesus. She wasn’t even tense. She was leaning into it. Eyes half-lidded, jaw slack, breath shallow and hungry.
“MMMmmm... I can feel it,” she moaned, her voice thick and sultry, like she was getting off on it. “Fuck. It's like pure power running through me.”
I wanted to say something. I should’ve said something. But I couldn’t. I was frozen.
Because her arm—right there in front of me—swelled. I’m not exaggerating. It was like I could see the muscle thickening in real time. Her delts puffed up—vascular, hard as stone—her pecs twitching with every beat of her heart. Her veins looked angry.
She looked down at her arm and smiled. But it wasn’t the smile I remembered. It was something else. Something darker. Predatory.
Danny calmly capped the syringe and started packing up like this was just another Tuesday. Cass rolled her shoulders, then slowly flexed her arm.
Her bicep peaked so high, I half-expected it to tear through her skin. The tank top looked tiny on her now—like it belonged to a girl half her size. But I think Cass liked it that way.
Then she locked eyes with me. “You came,” she said. Not a question—more like a statement of fact. “Good. You’re going to want to see this.”
Cass walked over to the barbell in the corner.
“I saw you looking through my stuff on the counter as you left last night.”
My face went hot—cheeks, neck, ears. Like I'd been caught with my hand in the cookie jar.
“I saw you taking a picture of my notepad. Fifty-pound dumbbell curls. You looked impressed,” she said, smirking.
“Are you fucking kiding, Cass? Anybody would’ve been impressed. People
don’t just curl 50 pounds with one arm! Especially when you were curling 20 pounds less than three weeks ago. But I guess that’s what happens when you’re on fucking steroids!”
Cass just laughed. “Oh, Tiff… I wasn’t on steroids then. That was all me. You can’t even imagine what I’m capable of when I really want something. And I really want to humiliate Emily. To break her. Make her want to crawl into a corner for the rest of her fucking life.”
She stepped toward the barbell, running her fingertips along the cold steel.
“Besides… those notes are old. I don’t have big enough dumbbells for a good pump anymore. That’s why you’re here. You’re going to help me.”
Cass began loading the barbell. A 45-pound plate on each side. Then another 10.
“Cass… that’s…” I quickly did the math. “That’s 135 pounds!”
The look she gave me made my stomach drop. She was savoring it. Savoring me.
“I know,” she said. “It should be a good warm-up.”
My legs nearly buckled. She had to be fucking with me. No one curls that. For most guys, that’s bench press weight.
Then she reached down and gripped the bar. I watched, hypnotized, as her muscles came to life—swelling, flexing, shifting under her skin like coiled beasts. She let out the sexiest fucking sigh as she stood up with the weight. Cass has always been sexy. But now? Now she was something else entirely.
Cass closed her eyes and inhaled through her nose, slow and deep. Then the bar began to rise.
The plates clattered.
“NNNNnnnnggghhhh... Oh yeah. This feels fucking amazing.”
She looked like she was having sex.
“Mmmm... Look at them. Look at my arms. I was trying to think of how to describe them yesterday. Baseball? Softball? Then I realized—more like a fucking coconut… RRRAAGHHH!!”
She powered through rep after rep, like she could go forever.
“My muscles are so big. So pumped. My skin feels tight, like they could burst through. I feel so... so fucking STRONG!!!”
I’d never seen her like this. Honestly? The only thing I could compare it to was watching a porn video—right as the girl’s building to orgasm. With every rep, Cass was climbing. Shuddering. Getting off.
And then... she opened her eyes.
“I need more weight,” she growled, her voice thick with hunger. “But this is all I have.”
She looked right at me. Smiled.
“I want you to grab the middle of the bar and try to pull it down.”
“I need more!” Cass moaned—no, pleaded—like she was on the edge of a release she couldn't quite reach.
I just stood there, mouth hanging open. Just to curl 135 was insane, but to... to ask me to actually try and pull down on it at the same time!
Cass looked desperate—desperate for more pressure, more pain, more power. Her eyes were wild, hungry.
I reached out. My hand was trembling. She saw it and growled with pleasure.
I wrapped my hand around the bar. Cold. Hard. I just reminded me how impossible this was.
"Puuuulllllll!!!" Cass roared.
I pulled. Nothing.
“Oooooohhhh yyyeeeaaahhhh…” she moaned, eyes glued to the veins swelling across her biceps. "Emily can't compete with me. With this!"
She was gone—completely over the fucking edge.
I pulled harder. With everything I had. I didn’t want to be part of this anymore. I wanted to stop her. To prove she still had limits. To show her she was still human. That there was a ceiling. Something.
The bar started to dip. Slowly. Agonizingly. Her arms extended, inch by inch
A flicker of hope—relief—something—rushed through me. But when I looked up, Cass was smiling.
She bit her lower lip. Her eyes locked onto mine with a glint of pure, sadistic pleasure.
“Watch me,” she whispered.
I was still pulling with everything I had—my full body weight hanging on the bar—but it didn’t matter.
Her arms swelled. Freakish. Monstrous. Her biceps ballooned, her shoulders flared, traps rose.
"NO ONE... CAN... STOP... MEEEEE!!!!" she roared as she completed the rep. Holding the weight... fucking FLEXING every muscle of her body.
Then I saw it. A wet patch spreading across the front of her shorts.
She didn’t flinch. Didn’t break. She held the flex.
“NNNNGGGHHH!!”
Her whole body trembled—not from weakness, but from release. She came—violently, powerfully—while flexing. The scent hit me a second later: sharp, animalistic, intoxicating.
Emily is fucked.
(From Emily's perspective)
Are you kidding me? Cass is trying to get big?? LOL You gotta be kidding me!
If that pretty girl worked out twice a day and was on the juice, I'd still have more muscle in my bicep than she has in her fucking leg!
Just look at this shit! I'm a beast!!
MMMmmm... Fuck. I measured again today. 17.5 inches baby! And look at this sick vein running over top! Thick as a worm! LOL Makes me looking like a fucking monster! RRRRAAGGGHH!!!
I bet if I sent this to Cass, that bitch would get so wet. Dreaming she could have muscles like this. Haha... Hell, it's making me wet! MMMmm..... Time to go flex in the mirror... Get a little bit of private me time!
When we got to the bar, there was a welcoming party waiting for us.
A fucking biker gang of bodybuilders. Since when did that become a thing??
They stared Cass down like they wanted to beat the shit out of her. Thought she was just some pretty girl. And the Pump Room is know for... well, it's not about being pretty. It's about being BIG!
"What's a pretty little thing like you doing at the Pump Room? You come to look at some real women?"
Cass just stood there, stone faced. Like she was watching a performance. This really pissed off the leader of the gang. She's used to people shaking in their boots at the mere sight of them.
She walked right up to Cass.
"You one of those muscle sluts who gets off lookin' at big biceps?"
Cass just smirked. The biker raised her arm. At first, I thought it looked kinda chubby. But then she flexed. I gasped. It was all muscle! It kept rising and rising until it was as big as a football.
"How about this, girlie? Does this make you wet? You wanna touch it? You wanna kiss my big muscle?"
When the biker shoved her massive flexed bicep in Cass's face. Trying to intimidate her. Toy with her. Whatever the fuck she was doing. Cass just chuckled.
I swear to God, I thought smoke was going to start coming out of the biker's ears.
"I have business here." Cass said, calm and collected, like the biker has no effect on her.
The biker scoffed. "Nobody goes in The Pump Room unless they deserve to be there. And a pretty face ain't gonna cut it. You gotta be big. You gotta be jacked. You gotta be a muscle freak!"
Cass slowly reached for the top of her jacket. One by one, she slowly unbuttoned it. And then... she pulled it open, like she was unveiling a masterpiece. And she was!
The bikers let out a collective gasp. Cass looked perfect.
"I think I've got the muscles covered. Now get the fuck out of my way."
When we got in, Cass headed right for the bartender. Fuck, even the bartender was jacked.
"Where's Emily?" she asked her. No small talk. No hey, how's it going. I've never seen Cass like this. It's like she only exists for revenge!
"Who wants to know?" she responded with a scowl.
"Cass."
After a brief pause, the bartender let out a deep laugh.
"You're her! haha ... Oh we heard all about you! The pretty girl who went away to college and thought she got some muscles. We all heard how Emily kicked your ass at the party a while back. Did you cry, pretty girl? LOL"
Cass reached out and grabbed the bartender by the wrist. She leaned in, a snarl on her lips and growled to the bartender—"I said where... the fuck... is Emily?"
Cass squeezed the bartenders wrist. The woman's laugh faded instantly and transformed into a look of pain. Cass stared daggers at her, and squeezed... harder! I could see the muscles of her forearm straining her sleeve.
The bartender grimaced and then started to whimper. "Fucking let go, you BITCH!"
That was not that right thing to say to Cass right now. Cass squeezed even harder, making the woman yell in pain.
"OOOWWWW FUCK!!! You broke my fucking wrist, you CUNT!"
Cass turned her attention to the rest of the bar. Where's Emily?
Cass left the bartender nursing her broken wrist, while she roamed the bar looking for Cass. She looked like a predator in search of prey!
I followed behind her, just trying not to be seen. Any one of the bitches in this bar could snap me in half if they wanted to. Cass clearly didn't share my concern!
She walked up to a group of women at the pool table. "Where the fuck is Emily?"
Jesus Christ! These girls were... well, two of them looked like they came right off the cover of Sports Illustrated, but with an extra 50 pounds of muscle! And behind them was the biggest fucking woman I've ever seen in my life. At a glance, you'd be forgiven for just thinking she was stocky. But this is The Pump Room. That meant it had to be all muscle! The realization made my stomach drop.
The girl in green smirked at Cass. "You're her, aren't you? That girl that Emily humiliated at the party.
As Cass stood face to face against the girl in the green bikini top, she slowly stripped out of her jacket. I couldn't help but gasp. She looked fucking incredible.
The changes I'd watched in Cass over the last weeks has really changed things for me. I've never once in my live found girls attractive, but ... I don't know what it is. Is it the muscles? The confidence? That absolute fucking dominance?
Whatever it is, I'd never been more turned on than when I saw these two muscle goddesses staring each other down. I kept dreaming they would strip out of those tops and press up against each other, rubbing each others muscles. MMMmmm.... God... they were too much.
"Hmmmm... looks like the pretty girl must have been hitting the weights since then." said the girl in green.
Cass was calm. Taking deep breaths that made her pecs strain her sports bra. Her lats were so thick I thought for sure the top would burst.
"If you're gonna be in The Pump Room, you gotta show you deserve to be here. So... let's see what you got."
They sat down at a table without saying a word. Their eyes locked on each other.
For a minute, nothing but silence. The sounds of their breathing. I watched the other girls eyes drift. Slowly roaming over Cass's body. I couldn't blame her. Cass looked fucking perfect!
Cass clearly had the size advantage. I thought she'd win, but that other girl. She had a fucking fire inside her.
I was finally snapped out of my daze when I heard one of the other girls shout, "GO!"
Immediately, the red-headed girl launched into a full assault. Every ounce of strength she had!
"RRRGGGGHHH!!!!!" Fuck, her tits looked like they were gonna spill out of her top and she would have no idea. She was lost in the struggle.
Her arm quaked with effort. But all I could focus on was Cass!
She... shit... I'm getting light-headed just remembering it. Remembering the look on her face. It was... calm! Pure fucking CALM , like she wasn't exerting any effort at all.
And looking at her arm, I could tell. She wasn't! I'd seen her in her apartment. Curling insane amounts of weight. I watched her arms balloon with so much muscle, there's not a shirt on the planet her muscles wouldn't have exploded through.
But this! ... It was like she was arm wrestling a little kid.
Then Cass started to talk. So quiet I had to lean in to hear.
"You bitches think you're hot shit. Strutting around showing off your biiiig haaard muscles."
The other girl continued to struggle and strain. Spit spraying through her teeth, determined not to lose.
"But the truth is... your muscles are pathetic. Soft. All show. You can't even fathom what I'm capable of."
Slowly, Cass began to squeeze her hand. The other girl's eyes snapped open and I saw a look of terror in her eyes. "No... NO!!! ... PLEASE!!! NNNGGGHHH!!!"
Cass squeezed harder.... HARDER... A sadistic grin appearing on her face, when the giant of a woman stepped out over the shadows and shoved Cass back from the table.
I knew she was big, but seeing her standing next to Cass... holy fucking shit! She was a MONSTER!
"You little cunt! Who do you think you are?"
She reached out with her massive paw and grabbed a fist full of Cass's tit. Jesus Christ! It must have hurt like hell, but Cass didn't even flench. And she sure as hell didn't back down. She looked like she was ready to mop the floor with that giant muscle freak.
I was trying to figure out what the hell to do... should I get help? Just watch? ... when I heard the sound of the door slamming open.
My head whipped around to see what the noise was and it was... oh my GOD!... It was Emily, but ... she's even BIGGER!
I should have been terrified. I should have run out the back door. But ... MMMmmmmm.... the moment I saw her. Those arms as big as my legs. But stuffed with big... hard... mmmmmuscles.... ooooh, my clit was tingling. It was like she opened a tap. I could feel my juices leaking down the inside of my thighs.
I wanted to jump on her and grind my wet pussy on her abs. Her massive peaked bicep. OOOooohhh...
And then... I remembered. Cass. Oh fuck.
What is Emily going to do to Cass THIS time???
Cass and Emily came together like they were drawn to each other by gravity.
Seeing them standing side by side, I couldn’t believe how big they’d both gotten. But as insane as Cass’s growth had been over the last months… Emily! Fucking GOD! I didn’t even know a girl could get muscles like that!
She looked like a man. But… lol… not really. Not any man I’ve ever seen. It’s like every girls horny fantasy of a big muscle man! MMMmmm… fuck! It was the hottest thing I’d ever seen. At least… for a few more seconds!
I was finally woken up by Cass’s smooth, sexy voice.
“I bet you’ve never seen muscles quite like this, have you Emily.” She brought her arm up in the most incredible bicep flex.
I wanted to pounce on it. To lick my tongue over the peak. And for a second, it think Emily wanted to too! I saw it in her eyes.
The arrogant, cocky, self-centered Emily… she showed a crack. It looked like she was… impressed!
“Pfft!! Please. You call that a muscle? I had a bigger muscle than that when I was a freshman in high school!”
“I’ll show you what real muscle looks like!” She brought her arm up and shoved it right in front of Cass’s lips.
“BOOM!!” she shouted as she flexed.
OOoooohhhh fuuuuck meeee!! It was so BIG!! I swear it looked almost as big as Cass’s head! My clit was fucking throbbing! I could feel myself getting so wet, it was trickling down my thighs. And I didn’t care. I was… I was in heaven.
“Yeah bitch. That’s what REAL muscle looks like! I bet you wanna put your lips all over my bicep don’t you. Maybe after I show you who’s stronger, I’ll let you worship my mmmmmassive mmmmmuscles!”
NNnggghhh… I wished so bad that she had been talking to me. I’d worship her so good!
But Cass was completely uninterested.
“Are we gonna do this or what?” she asked as she sat down at the table and held out her hand.
When they locked hands, their bodies erupted with muscle. I was breathing so hard I thought I might pass out. They were both pure… fucking… MUSCLE! MMmmmm….
“Back at the party, I was taking it easy on you,” Emily said. “But tonight… it’s time I put your ass in its place! You think just cause your muscle got a wittle bit bigger that you’re hot shit… well you’re fucking nothing. Nothing compared to me. I’m a fucking goddess!”
Cass’s nostrils were flaring. She was like a bull about to barrel right through Emily. She' was so ready!
Cass threw down the challenge—”Whenever you’re ready, little girl.”
And then, it was on!
“RRRRRGGGGHHHH!!!!” Cass growled as she tested Emily’s strength.
Emily looked calm. Like she had no doubt of the outcome.
“Haha… look at you. You’re so serious! You’re trying so hard, it’s precious!” Emily scoffed.
“You ready? Here, get a taste of real power!” Emily said as she began to press Cass’s arm towards the table.
“NNNNGgggghhhh!!!” Cass moaned as her hand went lower… lower. Slowly, but it was clear. Emily was winning. Easily!
“Hahaha… those muscles really are for show, aren’t they!” Emily laughed.
But just as Cass’s hand neared the table, it stopped. And then, Cass pulled their hands back up to center.
Emily had a confused look on her face. But not for long. It was quickly replaced with a scowl as she pulled again… slowly pulling Cass’s hand down toward the table again.
“YYYEEEAAAHHH!!! Feel my fucking POWER!!” But again, just as Cass’s hand hovered half an inch over the table, Cass slowly pulled it back up to center.
Then, I saw the panic flash over Emily’s eyes.
“OOooooohhhh….” Cass moaned. “That’s it. Just doing some curls to pump up my bicep.”
What the FUCK?!? Cass was fucking with her! She was in total control. She… she was just doing reps, like she’s doing a set at the gym!
My pussy felt like it was struck by lightening! OOooohhhh!!! I couldn’t help it… I shoved my hand down the front of my jeans and started rubbing myself while I watched Cass fucking humiliate Emily in front of the entire crowd at the Pump Room!
Emily couldn’t take it. The idea that Cass was not only as strong as her but stronger. Way stronger!
“No!!” she roared as she pulled with all her might.
Cass closed her eyes, taking a deep breath as she savored the moment.
“MMMMmmm… God, you’re so fucking weak. I thought you would be … at least a little bit of a challenge.”
Cass keep curling her arm, extending, curling, over and over. Her peak was fucking amazing!
“AAARRRRGGGHHH!!!!” Emily refused to give in.
Cass, in a calm voice—”Say it. Say I’m stronger.”
Emily strained… giving it everything she had. But it was like she were wrestling an iron statue. It was impossible to move her arm.
“This is impossible!!” she yelled.
“I said fucking SAY IT!!” Cass roared as she squeezed Emily’s hand.
“AAAH FUCK!!! STOP!! … OK OK!!!…. you’re…”
Cass locked eyes with Emily. Fuck, she was dominating her.
“You’re stronger than me!” Emily finally conceded.
Cass released Emily’s hand and stood up next to the table.
“Come.” she commanded.
Emily was so exhausted… so crushed… her hand in so much pain, she could barely move. She stumbled onto her knees next to Cass.
“That’s right. On your knees is exactly where you should be,” Cass said as she looked down on the broken Emily.
Something had changed in Emily. She wasn’t cocky. Or angry. I knew the look. It was the same one I had… it was fucking lust!
“MMmmm… looks like it’s you who’s going to be the worshipping.” Cass said.
After a long pause, Emily bit her lip and reach up, sliding her hand along Cass’s inner thigh and up her shorts, straight to her center.
Cass let out a gasp.
“NNnnnggghh…”
Cass stared down at Emily—kneeling, humbled, hands trembling against her thighs. The entire bar had fallen silent. The Pump Room queens—those towering women who had sneered at Cass—now watched with wide, reverent eyes.
Cass didn’t speak right away. She just stood there, chest heaving, muscles twitching. Then she reached down, gently lifted Emily’s chin… and smirked.
“I win.”
